Portable USB light tube



FIG. 1 is a perspective view of a portable USB light tube showing my new design;

FIG. 2 is a bottom view of the portable USB light tube of FIG. 1;

FIG. 3 is a bottom plan view of the portable USB light tube of FIG. 1;

FIG. 4 is a top plan view of the portable USB light tube of FIG. 1;

FIG. 5 is a left side view of the portable USB light tube of FIG. 1, with the right side view being a mirror image thereof;

FIG. 6 is an elevation view showing a first end of the portable USB light tube of FIG. 1;

FIG. 7 is an elevation view showing a second end of the portable USB light tube of FIG. 1;

FIG. 8 is a close up perspective view of the first end of the portable USB light tube of FIG. 1; and,

FIG. 9 is a close up perspective view of the second end of the portable USB light tube of FIG. 1.

The break lines have been applied in FIGS. 1-5, 8 to show undefined length. The appearance of any portion of the portable USB light tube between the break lines forms no part of the claimed design. The broken lines which appear throughout the drawing disclosure form no part of the claimed design. 

CLAIM The ornamental design for a portable USB light tube, as shown and described. 